bmarechal / PM100_waist

Authored by bmarechal 7 years ago

1 parent b869c4f31d

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README.md

# PM100_waist	1	1	# PM100_waist
	2	2
Make your waist measurment easy with a Thorlabs PM100D.	3	3	Make your waist measurment easy with a Thorlabs PM100D.
		4
		5	## Setup
		6	```
		7	==============================
		8	Prepare the setup
		9	==============================
		10	laser PM100D
		11	-->------------------] in W
		12	\|
		13	\|
		14	\|
		15
		16	knife at z and x=0mm
		17
		18	==============================
		19	move the knife and press enter
		20	==============================
		21	laser PM100D
		22	-->-----\|------------] in W
		23	\|
		24	\|
		25
		26	knife at z and x+=0.05mm
		27
		28	==============================
		29	```
		30
		31	## Acquisition
		32	`pm100d_waist.py` acquire the optical power along transverse section at z mm.
		33
		34	Create your measurement folder
		35	`mkdir -p my/best/measurement && cd my/best/measurement`
		36
		37	Run the acquisition program with the `-o` option to set z=123mm as terminaison of the filename.
		38	All the files will be saved in the current folder
		39	`path/to/the/program/location/pm100d_waist.py -o 123`
		40
		41	Press enter to get a power value, and move the knife of 0.05 mm, repress enter and again and again and again and again and again and again...
		42	When the section is done, enter the new z value in the prompt, the program will inform you that a new file is created.
		43
		44	At the end, press `CTRL + C` and enter to quit properly.
		45
		46	## Post-processing
		47	`fit_waist.py` fit each waist of each section and compute the w0 and the z0 of the beam.
		48